This is certainly a great idea but I wouldn't go by what others have scored. It is up to personal taste and I have found many times that I didn't like some highly rated expensive wines but enjoyed the cheap ones. But the app is great to track your personal taste and it will help you form a profile of the wine you like.
Download Vivino to keep track of all your favourite wines and see how others have scored them
There are loads of good offers on wine plans (like Naked, Sunday Times, Laithwaites). Buy a box of 12 whites and see which types you like and go from there. They generally have a good mix.
This wine advent calendar is a good start https://www.aldi.co.uk/wine-advent-calendar/p/707467429613800
Buckfast. Buckfast. Best wine you can get.